Added a kqueue class which isn't being used yet, but was part of trying to work around the limitations with the unix select() call and how it is limited to FD_SETSIZE file descriptors.

Also added a TimeSpecTimeout class which can be used with any calls that take a "struct timespec *" as an argument. It is used by the KQueue class.

Also updated some project settings.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175377 91177308-0d34-0410-b5e6-96231b3b80d8